00001 // Copyright (C) 2001, 2002, 2003, 2004 EPITA Research and Development 00002 // Laboratory 00003 // 00004 // This file is part of the Olena Library. This library is free 00005 // software; you can redistribute it and/or modify it under the terms 00006 // of the GNU General Public License version 2 as published by the 00007 // Free Software Foundation. 00008 // 00009 // This library is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with this library; see the file COPYING. If not, write to 00016 // the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 00017 // Boston, MA 02110-1301, USA. 00018 // 00019 // As a special exception, you may use this file as part of a free 00020 // software library without restriction. Specifically, if other files 00021 // instantiate templates or use macros or inline functions from this 00022 // file, or you compile this file and link it with other files to 00023 // produce an executable, this file does not by itself cause the 00024 // resulting executable to be covered by the GNU General Public 00025 // License. This exception does not however invalidate any other 00026 // reasons why the executable file might be covered by the GNU General 00027 // Public License. 00028 00029 #ifndef NTG_COLOR_YIQ_HH 00030 # define NTG_COLOR_YIQ_HH 00031 00032 # include <ntg/color/color.hh> 00033 00034 namespace ntg 00035 { 00036 00037 enum yiq_comp 00038 { 00039 yiq_Y = 0, 00040 yiq_I = 1, 00041 yiq_Q = 2 00042 }; 00043 00044 template<unsigned icomp> struct yiq_traits; 00045 template<> struct yiq_traits<yiq_Y> : public interval<0,1> {}; 00046 00047 template<> struct yiq_traits<yiq_I> 00048 { 00049 static float lower_bound() { return -.4192; } 00050 static float upper_bound() { return .5346; } 00051 }; 00052 00053 template<> struct yiq_traits<yiq_Q> 00054 { 00055 static float lower_bound() { return -.6783; } 00056 static float upper_bound() { return .6527; } 00057 }; 00058 00059 typedef color<3,8,yiq_traits> yiq_8; 00060 typedef color<3,16,yiq_traits> yiq_16; 00061 typedef color<3,32,yiq_traits> yiq_32; 00062 00063 } // end of ntg. 00064 00065 #endif // !NTG_COLOR_YIQ_HH